I'm still hard at this. Learning so much as I go.
I have done every single fix / trick old pspuae did.

All testing has been done with bubblebobble (it has some blitter in it), using standard A500 config, immediate blits, 0 FS (render every frame).

In beginning, I was getting around 17 - 20 fps. After all the old pspuae stuff, it then got to around 23 - 25 fps.
I then started getting annoyed, spent all week on it. So I started doing some research on net. Stumbled across, "how to disable vsync on psp", I was like, hang on, I read it was hardcoded to screen hardware. Turns out its not, so I set about disabling it.Read More

ITS ALIVE!!!

Finally got it to boot and display sort of kickstart screen. Hard part is finally over, boots with not one error, .

I know what I'm doing tomorrow. fixing it so it displays properly, then will start on adding mouse / joystick support, then menus.

So, I ended up getting side tracked. Currently pushing to get Wip4 up and running.

Slowly progressing through boot process. Fixed large mem allocations, input issue, config and rom issue. Wrote sound backend that progressed it more. Currently stuck at memory issue. Psp doesnt crash and neither does uae. Just stops no errors or anything. In process of tracing issue. Appears to me memory related....

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This is huge.

After Days, Weeks, Years, Decades. I finally have HDD support to a booting state. Its not 100% there.
Spent last 2 days on it, Finally had break through Friday night, fixed Double Bus Error. Turned out to be an override for filesys exec base that Christophe added when he originally ported E-UAE WIP3. Not easy to find, as you would never expect it. That allowed PSPUAE to boot fully with no errors. Then been trying to debug HDF no booting, it reads file now mounts it and probes it fine. Just nothing else. On 020 3.1 it gives blank screeen and eventually hangs.Read More